CVE-2023-0809

Advisory lineage Upstream: 0 Downstream: 7
Modified
Published: 02 Oct 2023, 18:56
Last modified:13 Feb 2025, 16:39

Vulnerability Summary

Overall Risk (default)
low
23/100
CVSS Score
5.8 MEDIUM
v3.1 (cve.org)
EPSS Score
0.05% LOW
0% probability +0.02%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

02 Oct 2023, 18:56
Published
Vulnerability first disclosed
13 Feb 2025, 16:39
Last Modified
Vulnerability information updated

Description

In Mosquitto before 2.0.16, excessive memory is allocated based on malicious initial packets that are not CONNECT packets.

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
  • v3.1•MEDIUM•Score: 5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

EPSS Trends

Current EPSS score: 0.05%• Percentile: 16%

Techniques & Countermeasures

  • CWE-789•Memory Allocation with Excessive Size Value

    The product allocates memory based on an untrusted, large size value, but it does not ensure that the size is within expected limits, allowing arbitrary amounts of memory to be allocated.

  • CWE-770•Allocation of Resources Without Limits or Throttling

    The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.

Affected Systems

  • eclipse•mosquitto

    < 2.0.16

References (2)